haraldwolff/qemu-patch-raspberry4
1
0
Fork 0
Code Issues Pull requests Packages Projects Releases Wiki Activity

ppc-40x: Correct ESR for zone protection faults.

Browse source 
Raise the zone protection fault in ESR for TLB faults caused by
zone protection bits.

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
This commit is contained in:
Edgar E. Iglesias 2010-01-11 15:32:47 +01:00
parent ec5c3e487e
commit dcbc9a70af
1 changed files with 18 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

23
target-ppc/helper.c
View file

@ -1171,6 +1171,8 @@ static int mmu40x_get_physical_address (CPUState *env, mmu_ctx_t *ctx,
break;
case 0x0:
if (pr != 0) {
/* Raise Zone protection fault. */
env->spr[SPR_40x_ESR] = 1 << 22;
ctx->prot = 0;
ret = -2;
break;
@ -1183,6 +1185,8 @@ static int mmu40x_get_physical_address (CPUState *env, mmu_ctx_t *ctx,
ctx->prot = tlb->prot;
ctx->prot |= PAGE_EXEC;
ret = check_prot(ctx->prot, rw, access_type);
if (ret == -2)
env->spr[SPR_40x_ESR] = 0;
break;
}
if (ret >= 0) {
@ -1580,11 +1584,20 @@ int cpu_ppc_handle_mmu_fault (CPUState *env, target_ulong address, int rw,
/* Access rights violation */
env->exception_index = POWERPC_EXCP_DSI;
env->error_code = 0;
env->spr[SPR_DAR] = address;
if (rw == 1)
env->spr[SPR_DSISR] = 0x0A000000;
else
env->spr[SPR_DSISR] = 0x08000000;
if (env->mmu_model == POWERPC_MMU_SOFT_4xx
|| env->mmu_model == POWERPC_MMU_SOFT_4xx_Z) {
env->spr[SPR_40x_DEAR] = address;
if (rw) {
env->spr[SPR_40x_ESR] |= 0x00800000;
}
} else {
env->spr[SPR_DAR] = address;
if (rw == 1) {
env->spr[SPR_DSISR] = 0x0A000000;
} else {
env->spr[SPR_DSISR] = 0x08000000;
}
}
break;
case -4:
/* Direct store exception */